If I want to lose fat but not gain muscle in my legs and glutes should I avoid or walk up hills when jogging?

Also, do I need to weight train my lower body if I go jogging? Today I did upper body WT then went for a 40 minute jog. I plan on doing cardio 4-6 days a week and upper body training M/W/F. I know it's best to do a full body WT but I feel that I'm already disproportionate, having a skinny upper body and thicker lower body.

Running uphill isn't going to stimulate alot of muscle growth if you already are bottom heavy, it will just increase endurance.

Post some pictures, I doubt your as unproportional as you say.
The more muscle the better.

Thanks for the reply. I may post some pics up later if it'll help you guys help me. Currently I'm torn on wether or not I should start weight training my lower body though, is jogging enough?

I've also altered my routine a bit and would like to know if it's any good. Currently on work days I wake up around 5am, get ready, and walk about 2.5 miles to work. I eat breakfast at work at 7am. Is it ok that I don't eat til after the walk? I eat about every 3 hours. After work I change to shorts and jog the 2.5 miles home, most the way is inclined so I can't make it non-stop yet. 3 days a week on non-consecutive days I'll WT my upper body when I get home, so I'm doing my cardio before my WT.

I've got a lot of research to do (continue to do). Theres just so much information, theories, and conflicts. It really is a science.

1. Jogging can never replace good old lower body weight training with squats
2. It's fine if you eat after the walk
3. Forget the science. Do what works for you.

If you just want to lose fat and not gain any muscle, I don't think it is necessary to do any weight training. Try to run up and down stairs or some small hill, it will get your heart rate up and consume your energy which will help you to burn your fat. Weight training before jogging is also a nice way to burn and get yourself "toned" as you have done allready. As Phate89 said, at some point you'll see what works for you and what doesn't.

Whether you believe in science or not (as a scientist myself, I do), weight training with cardio has consistently been shown to lose weight faster than cardio or weights alone.

Cardio vs. Weights: The Battle Is Over - washingtonpost.com

I unfortunately don't have hills near where I live. Hills are great for exercise---mostly cardio but certainly they provide more resistance for your muscles than jogging on flat ground. If I had hills around, I would definitely make use of them. Plus, psychologically, I think it feels great to charge up a hill.

I don't think you have to worry about building too much muscle mass in your legs from runnng up hills, unless of course you want your legs to be really scrawny. If your legs were really scrawny (such as mine were when I was 16---I had almost no fat or muscle anywhere on my body), then running up hills would build up leg muscle. You would build up leg muscle up to the point that your workout required it. Passed that point, you wouldn't get bigger legs because your body wouldn't require additional muscle mass. If your leg muscles are already quite big, as you say, I don't think running up hills is going to make them bigger. Running up hills, in that case, is just going to be a great cardio workout, and if you've got hills around you, by all means, run up them as much as you want.

Why is it that you don't want even bigger legs? Is it just because you feel self-conscious about looking dispropotionate (which may not be as true as you think)? Or do you just want to be an endurance athlete and don't want a lot of extra muscle you don't need? Either way, I guess lower body weight training would be something you would have little reason to do. To be sure, I think most people (including myself) want stronger legs and should WT them more but maybe your goals are such that you have little reason to build them up anymore, in which case you are better off with long runs than squats.

I didn't try to say that weightraining is useless and surely the combination of these two is great. I just tried to say that if person has perhaps 60minutes 4 times a week to train and doesn't want to grow muscles, I don't still see the point going to gym. Hard training done by intensive running or a long jog at fat burning heart rate would give the desired results without paying high price for going out to a gym.

If you think you are disproportionate, first off all people's view of themselves is often more harsh and sometimes even unrealistic as compared to how other people see them, so posting a picture might not be a bad idea. Either way if you did not want to gain much size on your lower body/legs or even lose a little size there if there is some "reserves" there I would do your normal upper body workouts, possibly lower body workouts as well, but I would do low weight high rep and take it easy on the lower body. And also I would run relatively slower at a longer distance as upposed to sprinting. In my experience that might be something that might help you.